Seiko Cal. 6640 - 319

This Solar model from 1984 features a 40mm Stainless Steel case. With its 21mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-6b73d4cc0c77]

Also known as: Turtle, Silverwave

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1984

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